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matt
Dodge Dakota
JOIN HERE
4/06/2007
23:01:33
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 Subject: gas mileage
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Message:
I have an 01 dakota 3.9 V6 2wd with 112k miles.. i currently average 12.8 mpg with mixed city and hwy miles and can get up to 15.9mpg with hwy only and that is really babying it. it also doesn't have near the power and get up as it use to. i have replaced all my oxygen sensors recently. I replaced my spark plug wires about 40k ago and my plugs about 60k ago. i am looking at replacing my plugs again but will they alone help me get back to where it needs to be or what other options should i consider? and what kind of gas mileage should i be getting?
-thanks, matt-
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J and J Auto
GenII
 
4/11/2007
00:15:56
|  RE: gas mileage
IP: Logged
Message:
17 to 20mpg
check your cap and rotor
napa mo26 mo28 cap and rotor solid brass incerts
What brand o2
ngk.com get the right ones no bosch or other brand
NGK FR4 for your stock truck gap .040
you may also want to have your fuel pressure
checked 49 +- 5 psi
Larry
J&J Auto
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ccman
Dodge Dakota
JOIN HERE
4/11/2007
00:29:19
| RE: gas mileage
IP: Logged
Message:
I have an 02 dakota 3.9 2wd and just turned 70,000 miles and was getting really poor performance and i do all highway driving. Put new factory plugs in, new cap and rotor and the wires are performance wires and only about 3 years old so i left them on. The cap was completely messed up. when i took it off it was all white and ashy inside there. Put a new one on and what a difference! also made sure no wires were touching on metal valve covers especially the coil wire. this makes a big difference too from arching
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Problem Child
Dodge Dakota
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4/17/2007
19:57:02
| RE: gas mileage
IP: Logged
Message:
Now I'm confused Larry, NGK, FR4 or 5
2002,3.9, MSD Ignition.
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not larry
Dodge Dakota
JOIN HERE
4/17/2007
21:44:44
|  RE: gas mileage
IP: Logged
Message:
FR4 are stock heat range
FR5's are 1 range colder to help with pinging issue's
& matt the cat could also be getting clogged up on you
also do you run any injector cleaner?
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Summit racing
Dodge Dakota
JOIN HERE
4/17/2007
22:21:49
| RE: gas mileage
IP: Logged
Message:
Go to summit racing get this kit. cap rotor wires, SUM-867624CR <<<<summit# for your truck
Check fuel pump pressure...and change air cleaner to k&n with your stock box
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Bob Lincoln
Dodge Dakota
JOIN HERE
4/18/2007
08:32:25
| RE: gas mileage
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Message:
Get a new air filter every 15K miles. Keep tires inflated - they'll kill 2-3 mpg. I have a totally stock 92 Dak 4x4 club cab with V-6 and auto and cap, and I get 20+ mpg highway. You should, too.
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daddio
Dodge Dakota
JOIN HERE
4/18/2007
08:48:11
| RE: gas mileage
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Message:
i've got an '00 QC 3.9 5spd 4x2. get 22 or better on the highway. 17-18 city. only thing not stock is a v8 tb and plugs 1 range colder than stock. removed that stupid snorkel out of the air box and cut almost the whole front of the stock airbox open. if you want mileage you want hot air and as much as you can get.
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